HTTPS clone URL

Subversion checkout URL

* Replaced cancel/delete button in files area
* Consolidated Image upload styles with AssetUpload styles
* Changed name of step 2 in image upload
* Made image editing hidden by default, so multiple files can be seen,
and added ability top open and close
* Tweaked styles in on page upload field (status colour and file name
width)

/** This file defines the jstree base styling (see http://jstree.com), as well as any customizations (see bottom of file). The styles are usually added through jstree.js on DOM load, but we need it earlier in order to correctly display the uninitialized tree. */